Home / 3,986,336.22-5,980,450.41-1,290,661.62

Finding the Fourth Proportional to 3,986,336.22, 5,980,450.41 and 1,290,661.62

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Solution

The fourth proportional to 3,986,336.22, 5,980,450.41 and 1,290,661.62 is: 1,936,298.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,336.22 : 5,980,450.41 = 1,290,661.62 : x
  2. Step 2: Convert to fraction form
    3,986,336.22/5,980,450.41 = 1,290,661.62/x
  3. Step 3: Cross multiply
    3,986,336.22x = 5,980,450.41 × 1,290,661.62
  4. Step 4: Simplify right side
    3,986,336.22x = 7,718,737,814,500.27
  5. Step 5: Solve for x
    x = 7,718,737,814,500.27/3,986,336.22
  6. Step 6: Final answer
    x = 1,936,298.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.